Influenza chapter of the green book updated by PHE

Influenza is a highly infectious respiratory infection. It can cause dangerous illness, particularly in certain high-risk populations such as the very young and the elderly. Timely immunisation against seasonal influenza is one of the most effective ways to reduce the risk of these patient groups developing serious influenza.

Chapter 19 of Immunisation against infectious disease, or ’the green book’, covers immunisation against influenza. The October 2017 update includes updated information on the benefits of quadrivalent vaccines.